>> he's apparently been trying to talk our victim for the last double years, multiple encounters with the police, reporting this type of activity. >> they said she lived here with her ten-year-old son she was outside a few feet away in the parking lot when ramirez stabbed her, stabbing her in the head and arms. >> held her head up, kept pressure on it and i said who did this? can you give me a name, any name? she couldn't really talk. >> ramirez ran away and police in the s.w.a.t. team surrounded the area. a door to door search led nowhere. during that time dents were told to stay in their homes. lowell was in his apartment for three hours. he knew her, but he didn't know about her ex-boyfriend. >> she was nice to people and for me, i had no trouble or didn't see anybody. >> ramirez they believe is driving this green pickup truck to mexico. detectives admit what happened yesterday is not only sad, but frustrating.